Fan scroll for cotton exhausters



June 8 1926.

H. E. TOLLIVER FAN SCROLL Fon COTTON EXHAUSTERS Filed August 25I 1925Patented June 8, 1926.

UNITED STATES-i HARRY E. TOLLIVER, OF IVIANGUM, OKLAHOMA.

FAN SCROLL FOR COTTON EXI'IAUSTERS.

Application filed August 25, 1925.

This invention relates to cotton exhausters wherein exhaust tane areused, and particularly to the scroll which iorms the cuter wall ot thecasing ot the exhaust ian.

Exhausters having exhaust fans therein as described are used in cottongins tor the purpose of handling the cotton from the wagon to the ginstands, and as the cotton has more or less sand in it this sand acts tocut these scrolls and the scrolls have to be changed in a very shorttime on an average of every t-hree days because of the Afact that thescroll has been cut out by the sand projected by the ian against thescroll. It is hard to make this change inasmuch as the scrolls are allmade in one piece of iron and are expensive. Sometimes these scrolls arecut away within twenty-four hours and in all circumstances these scrollsare a constant trouble, annoyance and expense. When a hole is blastedthrough this scroll by the impact of the sand particles, the sand fliesall over the gin machines in the gin house.

With these objections in view, the object of the present invention is toprovide a sectional scroll which is so constructed that the sections maybe easily put in place or removed so that there is no necessity ofremoving the entire scroll if any certain part of it wears out but thesection may be readily removed and readily replaced by a new section.

A further object is to provide a section of such form that the sand willnot be discharged through the joints between the sections.

A still further object is to provide. scroll sections of cast iron tothereby increase the life ot' the scroll.

Another object is to so form the scroll sections in cross section as togive the dirt and sand a chance to spread out and not cut all in oneplace.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawing, wherein Figure1 is a vertical sectional view through the fan casing of a cottonexhauster constructed in accordance with my invention;

Figure 2 is a transverse section on the line 2-2 of Figure 1;

Figure a is a perspective view of one of the sections of the scroll;

Serial No. 52,435.

Referring to this drawing, it will be seen that l have illustratedtherein an ordinary cotton exhauster of the usual type and having theusual scroll 10. This scroll is spiral and is held in place by bolts. Myinvention consists in makin'g this scroll ot sections 11, these sectionsbeing of cast iron, cast to tit the curvature ot the scroll, and theends oit each section are reduced to provide portions 12 adapted tolapover the reduced portions ot the adjacent sections. rlhese sections arei'ormed with apertures 13 for the passage oi bolts or other meanswhereby the sections may be held in place. 'llransversely these sectionsare downwardly bulged so that the middle portion of the section 11 isthicker than the lateral portions, this inwardly bulged or somewhatconvex taco being designated 14. For ordinary cotton cxhausters thesections will be made eight and a half inches wide and one and a halfinches thick at the middle and there bveled off laterally to a half inchon the e ge.

These scrolls so formed in sections as above described have been in usefor some time by me and not only do they not wear out as quickly as theordinary scrolls but if by any chance a hole is cut through the sectionby the sand the section may be readily replaced. Furthermore, the trans`versely bulged face of the scroll section acts to prevent the sandstriking in one place but the sand tends to spread and thus wear moreevenly over the entire scroll section. By loosening four bolts 13, thesection may be taken out and replaced in live minutes.

I claim 1. A fan casing for cotton exhausters including side walls, anda transversely extending scroll, the scroll being made in sections, eachremovably attached to the side walls and each removable independently ofany other section.

2. A fan casing for cotton exhausters including oppositely disposed sidewalls, and a scroll, the scroll being made in independent sections, eachsection being reduced in thickness at certain edges to lap over thereduced edge of the next adjacent section, each section being removablebolted to the side walls independent ot' any other section and beingindependently removable.

3. A cotton exhauster having a fan casing, a scroll forming partthereof, the scroll being formed of a plurality of sections, eachsection being removably bolted to the fan casing independently of anyother section and eac-h section on its inner face being convex. Y

4:. A cotton exhauster havingvafan casing, a scroll forming partthereof, the scroll being formed of a plurality of sections, eachsection being removably bolted to the. fan' casing independently of anyother section and each section having a convex inner face,

the Section being thicker at its middle than at its lateral edges.`

5. As an article of manufacture, a scroll section for the fan casings ofcotton exliauster's, the section being of cast metal havino reducedforward and rear edges whereby it maybe lap jointed With adjacentSections having bolt holes whereby it may be attached and the inner faceof the section being transversely convex.

In testimony whereof I hereunto affix my signature.

HARRY E. TOLLIVER.

